Clamp.



H. e. WOODHEAD."

CLAMP. APPLICATION FILED MAR-25, I915- smm F wa 001;. 1 ,1917.

filledwith grain ea other material, whether: such receptacles are filled from spouts bywhich the material is led to them bygravrty I QcLAMP.

Mensa.

To all whom itmoy concern: I Be it known thatI ,HoRAcnG,' Weenrrnno, a citizen of the" United statesyresid cation.

My invention relatesto'devic eis which are" used for holding :ba gs 1 or sacks while being or whether the. material! is placed therein by the shovel, it is important that they be securely held and that they shall not be torn or otherwise injured bythe holding device.

/ j The object of the invention s te provide meansby which the bags or sacks may be securely held in the open position withoutj" And, whlle' so danger of injury thereto. providing, I also am able to furnish a strong, cheap and simple device which is easily manipulated to attach the bag thereto and from which it may readily be detached.

The principles of my invention are illustrated in the drawings, in which- Figure 1 shows a front view of my im proved bag holder;

Fig. 2 is a side view thereof; Fig. 3 is a bottom viewof Fig. 1, showing in section a bag in place thereon, and

Fig. 4 is an enlarged view of a cam-lever by which the bag is secured or released.

Further describing my invention by reference to the drawings in which like characters of reference denote like parts throughshaft 7 is journaledin the said flanges and j the lower part thereof is provided with a yielding abutment head 8, preferably con sisting of a wire coil whose periphery is set out from thecentral shaft to allow elastic movement toward the same. A member correlative to that last described comprises a shaft 9, which is similarlyjournaled in the flanges 5 and 6,;and a cam oflset body portion 10, having a roughened or knurled face .lspecificatienof Letters Patent... A Pa tlenited flet. 16, 1917., laptntahfcfi meantime; 25,1915; seriarn'araeeaf a 1:Eo nacn'.anwoonnnmn, on CHICAGO, ILLINOIS...

11. Totheshafti isattaclied alianclle 12', 7

securec't'agai-nst' rotation thereonand with it forming-a caimiever." The relation of, the handle tothe bodyportion of such can? lever s indicated by the full and "dotted linesshown in Fig: 1, and as hereinafter scribed. I y The lower" portions of the downspout should be provided with stationary bag retaini ng devices. Appropriate to this par pose are the corner brackets 14, 15, and 16, provided with the" outwardly projecting: flanges 1%,15, 1'6 and li'". 1

When it is desired to attach a bagtc'rtheg structure shown, the" cam-lever is thrown to the position shown in the dottecl linestin' Figif, and tire" OpenSmGuth ofthefbag is placed over thelower part of the down spout, beginning at the rear and engaging with the flanges '15, 17." Iti'sbi'ought for- "ward around the front brackets 14 and 16,

and the loose material or bight of the bag is carried between the head 8 and the offset portion of the cam-lever, the recess 4: facilitating this operation. The handle 12 is then turned to the full line position shown in Fig. l, thereby gripping the loose portion of the bag top between the members 8 and 10. The relation of the handle 12 to the face 11 is such that in this operation the point of greatest eccentricity of the latter is carried past the line drawn transversely through the aXes of the shafts 7 and 9, accommodation therefor being provided by the resiliency of the head 8. The bag is there by drawn tightly around the spout and securely held in that position. The reverse movement of the lever frees the bag and leaves the mechanism in position to receive the next bag which is to be filled.

I gageable with said head to positively move the same.

3. In a clamp; a gripping device consisthaving an eccentric head journaled on theframe, and an elastic abutment device adapted yieldingly to receive material placed between the same and said eccentric head andto cooperate therewith to hold the said material when said head is rotated past its dead center, the compressive'force between the elastic abutment and the eccentric head being controlled by the continued movement of the eccentric head. T

5. A clamp including a frame, a lever having an eccentric head journaled'onthe frame, and a coiled wire abutment device adapted yieldingly to receive, material.

placed between the same and said eccentric head and to have the convolutions of the abutmentengaged by said eccentric head "to hold the said material when said head is rotated past its dead center. I r

6. A clamp including a frame, a lever having a cam head ournaled on the frame, and

Copies, of this patent maybe obtained for an elastic coiled member adapted yieldingly to receive material placed between the same and said cam and tocooperate therewith to hold the said material when said head is rotated past its dead center.

7 A clamp including a frame, a pair of parallelshafts journaled in said frame, and movable cooperating rigid and yielding abutments carried'by said shafts respectively. V A

8. A clamp including a frame, a shaft carried by said frame, a coiled wire carried by said shaft with the convolutions i normally spaced from said shaft, and means I cooperating with the coiled wire adapted to engage. thesanie to move the convolutions at one side of the shaft into closer relationship therewith.

, In witness whereof, I have hereunto sub-,

scribed my name this 16th day of March, 1915, in the presence of two subscribing witnesses.

Witnesses: I

' C. K. CHAM ERLAIN, A. S. PHIL IPS.

five cents each, by addressing tlie' Gommissionerof Patents, Washington, 20.0. i

' Hormone. woo'DH'EAn. 

